function Verstuur() {
 if(document.form.naam.value == "") {
  alert("U heeft uw naam niet ingevuld");
  return false;
 }
 if(document.form.telefoon.value == "") {
  alert("U heeft uw telefoon nummer niet ingevuld");
  return false;
 }
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

// searchbox start

var active_color='#000000';       
  // Colour of user provided textvar 
  inactive_color='#666666';         
  // Colour of default text      
                                 
  window.onload=formDefaultValues;   
  function formDefaultValues(){  
      var fields=
      getElementsByClassName(document,"input","default-value");
      if(!fields){
          return;                
     }                          
      var default_values=new Array();
      for(var i=0;i < fields.length;i++){
          fields[i].style.color=inactive_color;
          if(!default_values[fields[i].id]){
              default_values[fields[i].id]=fields[i].value;
          }
          fields[i].onfocus=function(){  
              if(this.value==default_values[this.id]){
                  this.value=''; 
                  this.style.color=active_color;      
              }                  
              this.onblur=function(){
                  if(this.value==''){
                      this.style.color=inactive_color;
                      this.value=default_values[this.id];
                  }              
              }                  
          }                      
      }                          
  }
  function getElementsByClassName(oElm,strTagName,strClassName){
      var arrElements=(strTagName=="*"&&oElm.all)? oElm.all:
      oElm.getElementsByTagName(strTagName);
      var arrReturnElements=new Array();
      strClassName=strClassName.replace(/\-/g,"\\-");
      var oRegExp=new RegExp("(^|\\s)"+ strClassName +"(\\s|$)");
      var oElement;
      for(var i=0;i < arrElements.length;i++){ 
          oElement=arrElements[i];   
          if(oRegExp.test(oElement.className)){
              arrReturnElements.push(oElement);
          }                      
      }                          
      return(arrReturnElements); 
  }      

// searchbox end